Geez, I guess I'm going to agree with Lee too!
The 70's-80's band idea is great for us old folks... still loved that Hustler party @ House of Blues with that 70's band... what were they called? That's right - Boogie Knights... that was pretty cool. One of the better parties I'd attended at the Vegas venues.
Just recently introduced my teenagers to The Rocky Horror Picture Show this week, so of course that's stuck in my head as a theme party. I remember a discussion a long while back with the old timers about memories of going to the midnight show... that could be a fun blast from the past complete with costumes and all... *sigh* (showing MY age now - lol)
Anyway... I think this is great that you're bringing this to the people D$ - excellent idea!